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Applicability of Demirjian's method for age estimation in a sample of Italian children with Down syndrome: A case-control retrospective study.

Forensic Sci Int

May 2019

Department of Biomedical and Neuromotor Sciences (DiBiNeM), Unit of Dental Care for Special Needs Patients and Pediatric Dentistry, University of Bologna, Bologna, Italy.

Age estimation is widely applied in several clinical and forensic fields. The radiographic evaluation of dental development is one of the most accepted tools for this purpose. Among the different methods proposed, Demirjian's method was the most extensively used and tested in the medical literature revealing that the original standards for the French-Canadian population tends to over-estimate the age of different population groups.

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Background: The accuracy of estimated age should depend on the reference data sets (RDS) from which the maturity scores or Ages of Attainment (AoA) were obtained. This study aimed to test the accuracy of age estimation from three different population specific dental reference datasets (RDS).

Methods: Two hundred and sixty six dental panoramic radiographs of subjects belonging to southern Chinese ethnicity were scored and dental age (DA) was estimated from three reference datasets: French-Canadian, United Kingdom (UK) Caucasian and southern Chinese.

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Forensic dentists are frequently required to determine the age at death of unidentified skeletons, or to age live individuals who have no record/documentation of their chronological age. In order to be of the greatest value, the method used should have the lowest possible standard deviation and be validated for the individual's specific population group. The method most frequently used in Forensic Dentistry for the estimation of age in children, was described by Demirjian et al.

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The French-Canadian data set of Demirjian for dental age estimation: a systematic review and meta-analysis.

J Forensic Leg Med

July 2013

Paediatric Dentistry & Orthodontics, Prince Philip Dental Hospital, Faculty of Dentistry, The University of Hong Kong, 34 Hospital Road, Pokfulam, Hong Kong.

Background: Estimation of age of an individual can be performed by evaluating the pattern of dental development. A dataset for age estimation based on the dental maturity of a French-Canadian population was published over 35 years ago and has become the most widely accepted dataset. The applicability of this dataset has been tested on different population groups.

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Background: Dental age estimation in children plays an important role in forensic dentistry. The most commonly used method for age estimation was developed by Demirjian in 1973 on a French-Canadian sample. It generally overestimates dental age in many populations.

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